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Title: Graphite oxide-mediated synthesis of porous CeO{sub 2} quadrangular prisms and their high-efficiency adsorptive performance

Graphical abstract: - Highlights: • Porous CeO{sub 2} quadrangular prisms have been prepared via graphite oxide-mediated synthesis. • Dual-pore hierarchical systems are formed with the pore distributions around 4 nm and 30 nm. • Porous CeO{sub 2} exhibits a rapid adsorption to Rhodamine B with a removal efficiency of ∼99%. • Porous CeO{sub 2} retains the same performances in different pH solutions. - Abstract: We report a graphite oxide-mediated approach for synthesizing porous CeO{sub 2} through a facile hydrothermal process followed by thermal annealing in air. The phase structure, morphology, microstructure and porosity of the products have been revealed by a combination of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N{sub 2} adsorption. The as-prepared CeO{sub 2} products show well-defined quadrangular prism morphology, and they are composed of interconnected nanoparticles with diameters around 30–100 nm. In particular, the dual-pore hierarchical systems are created in the CeO{sub 2} quadrangular prisms with the pore distributions around 4 nm and 30 nm. The dye sorption capacity of the porous CeO{sub 2} is investigated, which exhibits a rapid adsorption to rhodamine B with a high removal efficiency of ∼99%. Moreover, the CeO{sub 2} absorbent retains the same performances in different pH solutions.
Authors:
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Publication Date:
OSTI Identifier:
22285169
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 48; Journal Issue: 10; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ADSORPTION; CERIUM OXIDES; DYES; GRAPHITE; MICROSTRUCTURE; NANOSTRUCTURES; POROSITY; POROUS MATERIALS; PRISMS; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION